Exam Elementary Physics Chapter 28 Part 2

Isaac Newton first became famous for his contributions to the understanding of light To say that an object is red means that it appears red What characteristic of light mostly relates to color? frequency Different colors of light correspond to different light frequencies When the frequency of light matches the natural frequency of molecules in a material, light is absorbed The color of an opaque object is the same as the light that is reflected You can get a sunburn while under the "shade" of a beach umbrella due to reflected sunlight from the sand. A blue object will look black when illuminated with yellow light A red object will appear black when illuminated with cyan light A yellow object will appear black when illuminated with blue light If sunlight were green instead of white, the most comfortable color to wear on a hot day would be green If sunlight were green instead of white, the most comfortable color to wear on a cold day would be magenta What color light is transmitted by a piece of blue glass? blue What color is fully transmitted in common window glass? green blue red yellow Which piece of glass will warm up quicker in sunlight? colored glass Light shines on a pane of green glass and a pane of clear glass. The temperature will be higher in the green glass A fast-moving ball is more easily seen if it is yellow-green The solar radiation curve is a plot of Sun's brightness versus frequency of emission The LEDs that make up the color on some TV screens are red, blue, green. Colors seen on some TV screens result from color addition If three primary colors of light shine on a white wall and produce a white spot, the primaries must be additive Which is not a color? black The brightest color in sunlight is yellow-green The Sun is not seen as yellow-green because it is small part of a mixture of other colors in sunlight. Stare at a red wall for a few minutes and then gaze at a white wall. Due to retina fatigue you see cyan Complementary colors are two colors that produce white light when added. The complementary color of blue is yellow If only one color is absorbed in the pigment of a particular blue paint, that color would be yellow How many colors of ink are used to print full-color pictures? three plus black Look at full-color photos in your textbook with a magnifying glass and you'll see inks of magenta, cyan, yellow, and black. A mixture of red and green pigments appears muddy brown Magenta light is a mixture of red and blue light A mixture of cyan and yellow pigments appears green Which interacts more with high-frequency sounds? small bells Which interacts more with high-frequency light? small particles Distant bright snowy mountains appear yellowish because blue has been scattered away from light reflected from the mountains. Distant dark mountains appear bluish because you're looking at low-level blue sky between you and the mountain. The sky is blue because air molecules in the sky act as tiny optical tuning forks that scatter blue light. The sky is usually the deepest blue just after a rainstorm. If Earth's atmosphere were appreciably thicker, snow would appear yellow f the atmosphere were about 40 times thicker, the Sun at noon would appear red-orange Light travels slightly slower in the lower atmosphere A setting Sun appears red due to light's longer path through air at sunset. Red sunsets are due to light of lower frequencies that survive being scattered in the air. If molecules in the sky scattered orange light instead of blue light, sunsets would be colored blue On a planet in the solar system where the sky normally scatters light of lower frequencies, its sunsets would be bluish On a planet where atmospheric gases are red, distant dark mountains would appear reddish On a planet where atmospheric gases are yellow, distant snow covered hills would look bluish The redness of the lunar eclipse is due to refraction of sunsets and sunrises all around Earth. The whiteness of clouds, unlike the blueness of the sky, primarily involves reflection and refraction of sunlight. Compared to smaller clouds with small droplets, a big cloud with large droplets is darker. absorbs more light. is more likely to produce rain. The darkness of clouds is due to absorption. often being in the shadow of another cloud. The greenish blue of water is evidence for the absorption of red light. The part of the electromagnetic spectrum most absorbed by water is infrared The part of the visible spectrum most absorbed by water is red The extraordinary blueness in lakes in the Canadian Rockies is the result of glacial silt in the water scattering blue light. A white boat sunk in water where sunlight is dim appears cyan A red crab very deep in water, where sunlight is dim, appears no color- black green light + magenta light = white light yellow light + blue light = white light Magenta + yellow + cyan = white light red + green + blue = white light Red + green = yellow yellow = white - blue red + blue =magenta magenta = white - green Green + blue = cyan cyan = white - red Your friend says that the reason the distant dark mountains appear blue is because you're looking at the sky between you and the mountains i agree Isaac Newton first became famous for his contributions to the understanding of: A) the laws of mechanics. B) the law of gravity. C) light. C) light. Strictly speaking, to say that an apple is red means that A) is, or appears makes no differencered is red. B) an apple is red. C) it appears red. C) it appears red. What characteristic of light mostly relates to color? A) frequency B) amplitude C) both of these A) frequency Different colors of light correspond to different light A) intensities. B) velocities. C) frequencies. D) polarities. E) none of the above C) frequencies. When the frequency of light matches the natural frequency of molecules in a material, light is A) absorbed. B) transmitted. C) reflected. D) none of the above A) absorbed. The color of an opaque object is the same as the light that is A) transmitted. B) reflected. C) absorbed. D) all of the above E) none of the above B) reflected. You can get a sunburn while under the "shade" of a beach umbrella due to A) reflected sunlight from the sand. B) light scattering in the air. C) refracted sunlight from the water. D) none of the above A) reflected sunlight from the sand. A blueberry will look black when illuminated with A) cyan light. B) magenta light. C) yellow light. D) none of the above C) yellow light. A red apple will appear black when illuminated with A) magenta light. B) cyan light. C) blue light. D) yellow light. E) none of the above B) cyan light. A banana will appear black when illuminated with A) black light. B) blue light. C) green light. D) red light. B) blue light. If sunlight were green instead of white, the most comfortable color to wear on a hot day would be A) magenta. B) violet. C) blue. D) green. E) yellow. D) green. If sunlight were green instead of white, the most comfortable color to wear on a cold day would be A) green. B) violet. C) blue. D) yellow. E) magenta. E) magenta. What color light is transmitted by a piece of blue glass? A) yellow B) red C) blue D) orange E) white C) blue What color is fully transmitted in common window glass? A) yellow B) green C) blue D) red E) all of the above E) all of the above Which piece of glass will warm up quicker in sunlight? A) colored glass B) clear glass C) both the same A) colored glass Light shines on a pane of green glass and a pane of clear glass. The temperature will be higher in the A) green glass. B) clear glass. C) both the same A) green glass. A fast-moving ball is more easily seen if it is A) red. B) violet. C) green-blue. D) yellow-green. E) orange. D) yellow-green. The solar radiation curve is A) a dent in the spherical Sun. B) a plot of light intensity versus temperature of the Sun. C) the path of the Sun as it circles Earth. D) a plot of Sun's brightness versus frequency of emission. E) a plot of sunlight colors versus their frequencies. D) a plot of Sun's brightness versus frequency of emission. The LEDs that make up the color on some TV screens are A) yellow, blue, green. B) magenta, cyan, yellow. C) red, blue, green. D) red, blue, yellow. E) red, green, yellow. C) red, blue, green. Colors seen on some TV screens result from color A) subtraction. B) addition. C) either of these D) neither of these B) addition. If three primary colors of light shine on a white wall and produce a white spot, the primaries must be A) subtractive. B) multiplicative. C) additive. D) divisive. C) additive. Which is not a color? A) yellow-green B) black C) both of these D) neither of these B) black The brightest color in sunlight is A) violet. B) green. C) yellow. D) red. E) yellow-green. E) yellow-green. The Sun is not seen as yellow-green because A) its brightness is only slightly greater than the other colors. B) it is small part of a mixture of other colors in sunlight. C) it is not yellow-green. D) our vision is not adapted to yellow-green. B) it is small part of a mixture of other colors in sunlight. Stare at a red wall for a few minutes and then gaze at a white wall. Due to retina fatigue you see A) more red. B) black. C) cyan. C) cyan. Complementary colors are two colors that A) produce white light when added. B) are additive primary colors. C) are right for each other. D) produce white light when subtracted. E) blend together. A) produce white light when added. The complementary color of blue is A) yellow. B) cyan. C) red. D) green. E) magenta. A) yellow. If only one color is absorbed in the pigment of a particular blue paint, that color would be A) red. B) yellow. C) blue. D) green. B) yellow. How many colors of ink are used to print full-color pictures? A) two plus black B) one plus black C) three plus black D) six plus black E) four plus black C) three plus black Look at full-color photos in your textbook with a magnifying glass and you'll see inks of A) red, green, blue, and black. B) magenta, cyan, and yellow. C) red, green, and blue. D) magenta, cyan, yellow, and black. E) none of these D) magenta, cyan, yellow, and black. A mixture of red and green pigments appears A) orange. B) blue. C) muddy-brown. D) yellow. E) magenta. C) muddy-brown. Magenta light is a mixture of A) red and yellow light. B) yellow and green light. C) red and blue light. D) red and cyan light. E) none of the above C) red and blue light. A mixture of cyan and yellow pigments appears A) blackish-brown. B) green. C) magenta. D) orange. E) blue. B) green. Which interacts more with high-frequency sounds? A) large bells B) small bells C) both the same B) small bells Which interacts more with high-frequency light? A) small particles B) large particles C) both the same A) small particles Distant bright snowy mountains appear yellowish because A) of nature's wonderful preferences. B) blue has been scattered away from light reflected from the mountains. C) they are far away. D) the color yellow looks just right. B) blue has been scattered away from light reflected from the mountains. Distant dark mountains appear bluish because A) they are far away. B) of nature's wonderful preferences. C) yellow is being scattered. D) you're looking at low-level blue sky between you and the mountain. D) you're looking at low-level blue sky between you and the mountain. The sky is blue because air molecules in the sky act as tiny A) sources of white light. B) prisms. C) mirrors which reflect only blue light. D) optical tuning forks that scatter blue light. E) none of the above D) optical tuning forks that scatter blue light. The sky is usually the deepest blue A) just before sunset. B) during a rainstorm. C) when the air is humid. D) just before a rainstorm. E) just after a rainstorm. E) just after a rainstorm. If Earth's atmosphere were appreciably thicker, snow would appear A) still white. B) yellow. C) ultraviolet. D) blue. B) yellow. If the atmosphere were about 40 times thicker, the Sun at noon would appear A) red-orange. B) blue-violet. C) green-blue. D) orange-green. A) red-orange. The atmosphere of Jupiter is more than 1000 km thick. From Jupiter's surface, the Sun at noon would appear A) not at all. B) faintly white. C) white. D) none of the above D) none of the above Light travels slightly slower in the A) upper atmosphere. B) lower atmosphere. C) neither of these B) lower atmosphere. A setting Sun appears red due to A) absorption by smaller particles in the air. B) light's longer path through air at sunset. C) lower frequencies of light emitted during sunset. D) scattering of lower frequencies by larger particles in the air. B) light's longer path through air at sunset. Red sunsets are due to light of lower frequencies that A) survive being scattered in the air. B) are reflected by clouds and relatively large particles in the air. C) are scattered from smaller particles in the air. D) appear reddish-orange to the eye. E) are scattered from larger particles in the air. A) survive being scattered in the air. If molecules in the sky scattered orange light instead of blue light, sunsets would be colored A) orange. B) green. C) yellow. D) blue. E) none of the above D) blue. On a planet in the solar system where the sky normally scatters light of lower frequencies, its sunsets would be A) bluish. B) whitish. C) yellow-greenish. D) reddish. A) bluish. On a planet where atmospheric gases are red, distant dark mountains would appear A) greenish. B) yellowish. C) bluish. D) reddish. E) untinted. D) reddish. On a planet where atmospheric gases are yellow, distant snow covered hills would look A) greenish. B) bluish. C) yellowish. D) reddish. E) untinted. B) bluish. The redness of the lunar eclipse is due to A) dim light that is incident upon the Moon by Jupiter and other planets. B) infrared light continually emitted by the Moon. C) refraction of sunsets and sunrises all around Earth. D) scattering of lower frequencies of light by the Moon. C) refraction of sunsets and sunrises all around Earth. The whiteness of clouds, unlike the blueness of the sky, primarily involves A) water prisms. B) medium sized particles. C) reflection and refraction of sunlight. D) seeds upon which condensation of cloud material forms. C) reflection and refraction of sunlight. Compared to smaller clouds with small droplets, a big cloud with large droplets A) is more likely to produce rain. B) is darker. C) absorbs more light. D) all the above E) none of the above D) all the above The darkness of clouds is due to A) absorption. B) often being in the shadow of another cloud. C) both of these D) neither of these C) both of these The greenish blue of water is evidence for the A) reflection of red light. B) interaction between green and blue frequencies of light. C) absorption of red light. D) absorption of greenish-blue light. E) reflection of greenish-blue light. C) absorption of red light. The part of the electromagnetic spectrum most absorbed by water is A) red. B) cyan. C) infrared. D) all about equally. C) infrared. The part of the visible spectrum most absorbed by water is A) infrared. B) red. C) cyan. D) all about equally. B) red. The extraordinary blueness in lakes in the Canadian Rockies is the result of A) high-altitude refraction of light. B) the unique temperatures of these lakes throughout most of the year. C) glacial silt in the water scattering blue light. D) none of the above C) glacial silt in the water scattering blue light. A white boat sunk in water where sunlight is dim appears A) no colorblack. B) red. C) cyan. D) yellow. C) cyan. A red crab very deep in water, where sunlight is dim, appears A) no color|black. B) cyan. C) orange. D) brown. E) red. A) no colorblack. (A) Yellow light + blue light = _______ light (B) Green light + _______ light = white light (C) Magenta + yellow + cyan = _______ light (A) white (B) magenta (C) white TRUE or FALSE (A) Red + green + blue = white (B) Red + green = yellow = white - blue (C) Red + blue = magenta = white - green (D) Fill in the last statement. Green + blue = cyan = white - _______ (A) true (B) true (C) true (D) red Your friend says that the reason the distant dark mountains appear blue is because you're looking at the sky between you and the mountains. Do you agree or disagree? I agree